Recruiting weekends don't come any bigger than the one that is about to take place at Ohio State this Saturday when the Buckeyes host the Wisconsin Badgers. Many of Ohio State's top undecided targets will be on campus but the strength of the group lies in the junior class where not only is the majority of the BuckeyeGrove.com Ohio Top 25 expected to attend, but some premier junior prospects from around the nation are also planning to make the trip.

Four undecided prospects making the trip

With just a little more than a handful of spots remaining in the 2012 class, the scope is pretty narrow right now for Ohio State. On Saturday night, four undecided prospects that are currently holding offers are all expected to be on campus. Three of those prospects reside from the state of Ohio in Trotwood-Madison safety Bam Bradley, Cincinnati Taft defensive end Adolphus Washington, as well as Taft wide receiver Dwayne Stanford. The other is Fork Union wide receiver Michael Thomas.

For the Taft duo, the Buckeyes are considered the heavy favorites and while a commitment this weekend is not expected, it may not be much longer until the two pull the trigger on a commitment. The same could probably be said of Thomas, who is the most likely to issue a public comment after this weekend. Thomas has a top three of Notre Dame, Ohio State, and Oklahoma State, and rumors of a dreaded 'silent commitment' have been swirling over the last few weeks.

With Bradley, Ohio State has been fighting a bit of an uphill battle since offering over the summer and this is probably the last chance the Buckeyes have to take the lead in this recruitment.

Three out-of-state junior stars expected

The Buckeyes will host a trio of big-time juniors from outside of Ohio on Saturday, including two from the state of Indiana. Both Bishop Luers product Jaylon Smith and Warren Central product Tim Kimbrough are among the top junior prospects in the Midwest and both are expected to make the trip east on Saturday.

Smith is of course the brother of current Buckeye Rod Smith and already holds a verbal offer from Ohio State. Kimbrough is still waiting for an offer from the Buckeyes but lists at Ohio State among his favorite schools and has been receiving heavy interest from the Buckeyes recently.

Ohio juniors well representedNearly 20 members of the BuckeyeGrove.com Class of 2013 Ohio Top 50 are expected to be in Columbus on Saturday. Needless to say, this is a huge chance for Ohio State to make a major impression on nearly half of the state's top 50 prospects and to really build some momentum moving forward in the 2013 class.

Among the headliners are a pair of prospects that already hold offers in Trotwood-Madison defensive back Cameron Burrows and Kettering Alter quarterback Malik Zaire. The Buckeyes have long been in the driver's seat for Burrows and will look to strengthen their grip on that recruitment this weekend.

Things aren't that simple with Zaire, who lists a top two of Ohio State and Wisconsin. Getting to watch his two favorite schools battle it out in a great atmosphere will certainly be an interesting moment in this recruitment.

Though not currently holding offers, players such as Evan Lisle, Taco Charlton, Courtney Love, and Kyle Meadows could all be on the verge as all four are being recruited at a high level by the Buckeyes. Simply put, this will be the biggest recruiting weekend of the year at Ohio State so stay tuned to BuckeyeGrove.com throughout the weekend for more coverage of the Wisconsin game as well as updates on many of this weekend's visitors.

Below is a full lineup of which prospects are expected to be on campus on Saturday. As always, these lists are extremely fluid so make sure to check back in with BuckeyeGrove.com frequently over the next 48 hours as we continue to update this list.